CABALETTA BIO INC (CABA) Institutional Ownership Changes & 13F Activity
CABALETTA BIO INC (CABA). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include T. Rowe Price Investment Management, Inc., Bain Capital Life Sciences Investors, Llc, State Street Corp, Price T Rowe Associates Inc, and Millennium Management Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| State Street Corp | Buy | +7,369,327 | +1568.0% | 7,839,305 | $24.38M | Q2 2026 | Sep 22, 2026 |
| Manufacturers Life Insurance Company, The | Buy | +182,055 | — | 182,055 | $566.19K | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Buy | +3,522,112 | — | 3,522,112 | $10.95M | Q2 2026 | Sep 02, 2026 |
| California State Teachers Retirement System | Buy | +1,550 | — | 1,550 | $4.82K | Q2 2026 | Aug 24, 2026 |
| Cantor Fitzgerald, L. P. | Buy | +35,001 | +4.6% | 800,001 | $2.49M | Q2 2026 | Aug 19, 2026 |
| Stonepine Capital Management, Llc | Buy | +867,100 | +1734.2% | 917,100 | $2.85M | Q2 2026 | Aug 17, 2026 |
| Almitas Capital Llc | Sell | -211,491 | -62.7% | 125,900 | $391.55K | Q2 2026 | Aug 17, 2026 |
| T. Rowe Price Investment Management, Inc. | Buy | +7,789,902 | +70.3% | 18,869,907 | $58.69M | Q2 2026 | Aug 14, 2026 |
| Bain Capital Life Sciences Investors, Llc | Buy | +7,564,320 | +78.2% | 17,241,445 | $53.62M | Q2 2026 | Aug 14, 2026 |
| Price T Rowe Associates Inc | Buy | +3,976,397 | +899.1% | 4,418,674 | $13.74M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -3,834,790 | -65.0% | 2,068,491 | $6.43M | Q2 2026 | Aug 14, 2026 |
| Woodline Partners Lp | Buy | +2,949,900 | +235.9% | 4,200,142 | $13.06M | Q2 2026 | Aug 14, 2026 |
| Opaleye Management Inc. | Buy | +2,483,800 | +180.0% | 3,863,800 | $12.02M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +1,428,605 | +182.4% | 2,211,825 | $6.88M | Q2 2026 | Aug 14, 2026 |
| Sphera Funds Management Ltd. | Buy | +1,329,012 | — | 1,329,012 | $4.13M | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Sell | -1,086,986 | -43.5% | 1,410,931 | $4.39M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +828,145 | — | 828,145 | $2.58M | Q2 2026 | Aug 14, 2026 |
| Heights Capital Management, Inc | Buy | +755,626 | — | 755,626 | $2.35M | Q2 2026 | Aug 14, 2026 |
| Qube Research & Technologies Ltd | Sell | -508,150 | -26.3% | 1,426,840 | $4.44M | Q2 2026 | Aug 14, 2026 |
| Cormorant Asset Management, Lp | Sell | -500,000 | -9.1% | 5,000,000 | $15.55M | Q2 2026 | Aug 14, 2026 |
| Susquehanna Portfolio Strategies, Llc | Buy | +365,699 | +2078.4% | 383,294 | $1.19M | Q2 2026 | Aug 14, 2026 |
| Adage Capital Partners Gp, L.L.C. | Buy | +345,000 | +3.9% | 9,174,758 | $28.53M | Q2 2026 | Aug 14, 2026 |
| Charles Schwab Investment Management Inc | Buy | +324,062 | +637.6% | 374,886 | $1.17M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +241,565 | — | 241,565 | $751.27K | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Buy | +224,057 | +83.2% | 493,314 | $1.53M | Q2 2026 | Aug 14, 2026 |
| Superstring Capital Management Lp | Buy | +212,413 | +19.9% | 1,278,652 | $3.48M | Q2 2026 | Aug 14, 2026 |
| Ikarian Capital, Llc | Sell | -200,000 | -22.2% | 700,000 | $2.18M | Q2 2026 | Aug 14, 2026 |
| Wells Fargo & Company/Mn | Buy | +190,872 | +3181.2% | 196,872 | $612.27K | Q2 2026 | Aug 14, 2026 |
| Susquehanna Fundamental Investments, Llc | Buy | +152,964 | — | 152,964 | $475.72K | Q2 2026 | Aug 14, 2026 |
| Rafferty Asset Management, Llc | Buy | +146,107 | — | 146,107 | $454.39K | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about CABA activity
Which institutional owners are buying CABA?
Institutional owners buying CABA include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in CABA activity?
"Buy" means an investor increased their reported position in CABA compared to the prior reporting period. This reflects growing exposure to CABALETTA BIO INC (CABA) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in CABA increasing?
Institutional interest in CABA can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related CABA Institutional Insights
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- Institutional Portfolio Overlap & Shared Holdings
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- CABA Insider Trading & SEC Form 4 Activity
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